Crypto payments infrastructure company MoonPay has launched an open-source wallet standard designed for AI agents to manage funds and execute transactions across multiple blockchains, addressing key infrastructure challenges that have limited AI-crypto integration.

The Open Wallet Standard (OWS), announced Monday, was developed with contributions from PayPal, the Ethereum Foundation, the Solana Foundation, Ripple, OKX, Tron, TON Foundation, and Base, among other companies.

"The agent economy has payment rails. It didn't have a wallet standard. We built one, open-sourced it, and now the full stack exists," said MoonPay co-founder and CEO Ivan Soto-Wright in a statement.

The framework aims to solve fragmentation issues in wallet and key management that have complicated financial operations for autonomous AI systems, according to MoonPay, which is an investor in Decrypt’s sister company Myriad.

OWS supports the x402 open payment protocol developed by Coinbase, along with Stripe and Tempo’s Machine Payments Protocol (MPP) for session-based micropayments. It also builds on MoonPay’s earlier collaboration with Ledger that enables hardware wallet signing for MoonPay Agents transactions.

“On-chain payments originate from wallet addresses, and every chain represents them a bit differently,” said Mysten Labs co-founder and CTO Sam Blackshear in a statement, explaining that a “unified representation” streamlines processes and enables agents to focus on high-level tasks instead of details.

According to MoonPay, OWS is designed in such a way that a wallet’s private key is never exposed to agents, the LLM context or parent applications when transacting.



The launch comes as AI agents increasingly require sophisticated financial capabilities to operate autonomously, and forms part of a “deliberate shift” at MoonPay towards AI-native infrastructure.

Agentic payments are a growing concern for crypto infrastructure developers, with Coinbase launching a wallet specifically for AI agents with built-in guardrails, Stripe-backed Tempo Network focusing on enabling AI agent payment capabilities, and Sam Altman's World tapping Coinbase's protocol to verify humans behind AI agents.

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